What is called switching power supply? Such as commonly used circuit
The use of electronic components to control the power switch output, of course, than I said more trouble. Such as the general TV computers are used with the switching power supply.
Transformer is the power transformer for switching transformers. Not the kind of ordinary iron core transformer, direct transformer, switching transformers generally 220 volts AC rectifier into DC, and then through the high-frequency shock, in the switching transformer secondary to get a variety of voltage.
Commonly there are computer power, TV power part, some very light, small size charger and so on.
Power products are widely used in industrial automation and control, military equipment, scientific research equipment, LED lighting, industrial equipment, communications equipment, electrical equipment, instrumentation, medical equipment, semiconductor refrigeration and other fields
Switching power supply is composed of triode circuit, the 220V mains (through the rectifier filter 315V DC) into 15 ~ 35KHz pulse AC, through the high-frequency transformer isolation into a low voltage. As the transistor is working in the switch state, so this electronic transformer is called "switching power supply", mainly used to distinguish him from the "power frequency transformer" is called.
The current switching power supply is very widely used: color TV, DVD, notebook, computer, mobile phone charger, razor, etc. all use switching power supply.
